diff --git a/admin/index.html b/admin/index.html
index 1e0bd8a..0240aae 100644
--- a/admin/index.html
+++ b/admin/index.html
@@ -1144,7 +1144,7 @@
         <li><a href="#modbus_tab_holding_regs">Holding Registers</a></li>
     </ul>
     <div id="modbus_tab_g" style="display: flex;  align-items: center; flex-direction: column;overflow: auto" class="modbus-tab">
-        <div class="logo">ModBus</div>
+        <div class="logo">串口开关适配器</div>
         <img src="img/plc_back.png" class="back_image">
 
         <table class="ui-widget-content" style="z-index: 2;margin-top: 20px; border-collapse: collapse; display: inline; border: 1px solid black;">